dependencies: Use HTTPS for bintray repo

backend.native/konan.properties

@@ -15,7 +15,7 @@
 #
 
 # TODO: Do we need a $variable substitution mechanism here?
-dependenciesUrl = http://download.jetbrains.com/kotlin/native
+dependenciesUrl = https://download.jetbrains.com/kotlin/native
 
 # Don't check dependencies on a server.
 # If true, dependency downloader will throw an exception if a dependency isn't found in konan.home.

gradle.properties

@@ -20,7 +20,7 @@ remoteRoot=konan_tests
 #kotlinCompilerModule=org.jetbrains.kotlin:kotlin-compiler:1.1-SNAPSHOT
 # Download artifacts of https://teamcity.jetbrains.com/viewType.html?buildTypeId=bt345
 testDataVersion=1067176:id
-kotlinCompilerRepo=http://dl.bintray.com/jetbrains/kotlin-native-dependencies
+kotlinCompilerRepo=https://dl.bintray.com/jetbrains/kotlin-native-dependencies
 #kotlinCompilerRepo=http://oss.sonatype.org/content/repositories/snapshots
 #kotlinCompilerRepo=http://dl.bintray.com/kotlin/kotlin-dev
 kotlinCompilerModule=org.jetbrains.kotlin:kotlin-compiler:1.1-20170818.205557-805

tools/kotlin-native-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/KonanCompilerDownloadTask.kt

@@ -25,7 +25,7 @@ import java.io.File
 open class KonanCompilerDownloadTask : DefaultTask() {
 
     internal companion object {
-        internal const val DOWNLOAD_URL = "http://download.jetbrains.com/kotlin/native"
+        internal const val DOWNLOAD_URL = "https://download.jetbrains.com/kotlin/native"
 
         internal val KONAN_PARENT_DIR = "${System.getProperty("user.home")}/.konan"
     }